Yamaha YHT-450 700-Watt 6.1-Channel Home Theater in a Box (Black) (Discontinued by Manufacturer) Includes the HTR-5740 A/V receiver, NS-AP4400 speaker package, and a YST-SW015 powered subwoofer Delivers 100 watts x 6 channels, Dolby Digital/EX, DTS, DTS-ES 6.1, Dolby Pro Logic IIx, and 29 exclusive Yamaha surround effects Receiver offers 4 A/V inputs (1 front), 2 digital-audio inputs, and 40-station AM/FM presets 6 magnetically shielded speakers: 2 main left/right (3-way with 6.5-inch woofers), 1 center (2-way, dual 4-inch drivers), and 3 effects satellites 8-inch 120-watt powered subwoofer with bass-enhancing QD-Bass (Quatre Dispersion Bass) and Yamaha Advanced Active Servo technologies